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Vishay Siliconix DG442BDY-T1
- Part No.:
- DG442BDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442BDY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,014
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Product details
Overview
DG442BDY-T1 from Vishay Siliconix is a quad SPST analog switch IC designed for bidirectional signal routing in precision analog and audio paths. It features 45 Ω typical on-resistance, 120 ns typical turn-on time, and ±15 V dual-supply operation - enabling low-distortion switching in data acquisition and sample-and-hold circuits.
For engineers reviewing the DG442BDY-T1 datasheet, DG442BDY-T1 pinout, DG442BDY-T1 application, or DG442BDY-T1 equivalent, key selection criteria include guaranteed charge injection (−1 pC), off-isolation (−90 dB at 100 kHz), TTL/CMOS-compatible control logic, and SOIC-16 package compatibility with industrial temperature range (−40 °C to +85 °C).
Technical Context
The DG442BDY-T1 implements complementary MOSFET switch pairs per channel with epitaxial latchup protection and silicon-gate process technology. Its logic-inverted truth table (IN = 0 → ON; IN = 1 → OFF) enables direct interface with microcontroller GPIOs without level-shifting.
Each channel operates symmetrically with full rail-to-rail analog signal handling (±15 V), sub-nA leakage (±0.01 nA max), and matched on-resistance (ΔRDS(on) ≤ 5 Ω). Charge injection is minimized via optimized gate overlap design to reduce pedestal error in sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RDS(on)) | 45 Ω typ. - ensures minimal signal attenuation and gain error in precision amplifier gain-switching networks |
| Turn-On Time (tON) | 120 ns typ. - supports >1 MHz multiplexed data acquisition sampling rates with deterministic timing |
| Charge Injection (Q) | −1 pC typ. - limits hold-mode voltage step error to <10 µV in 1 nF sample capacitors |
| Off Isolation (OIRR) | −90 dB at 100 kHz - suppresses crosstalk between adjacent channels in multi-channel instrumentation |
| Analog Signal Range | ±15 V - accommodates full-scale industrial sensor outputs and bipolar op-amp interfaces |
| Supply Current (I+/I−) | ±5 µA max - enables battery-powered portable test equipment with negligible standby power impact |
| Logic Compatibility | TTL/CMOS - allows direct connection to FPGA I/O banks and MCU GPIOs without external buffers |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 3.8 mm × 9.9 mm footprint, 1.27 mm pitch, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | IN1–IN4 | Active-low digital control inputs - logic '0' enables corresponding switch; inverted function vs. DG441B |
| 2, 6, 10, 14 | S1–S4 | Source terminals - bidirectional analog current path; connect to signal source or load side |
| 3, 7, 11, 15 | D1–D4 | Drain terminals - bidirectional analog current path; connect to signal destination or return path |
| 4 | V− | Negative supply rail - must be connected to −15 V (or GND in single-supply mode) for proper channel blocking |
| 8 | GND | Analog/digital ground reference - requires low-impedance star connection to minimize switching noise coupling |
| 12 | V+ | Positive supply rail - supplies internal level shifters and switch drivers; rated up to +15 V |
| 16 | NC | No-connect terminal - left unconnected per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Inverted logic control | EN = low activates switch - simplifies interface with active-low enable signals in PLC I/O modules |
| Low charge injection (−1 pC) | Reduces hold-mode pedestal error to <10 µV in 1 nF sampling capacitors - critical for 16-bit SAR ADC front-ends |
| Bidirectional conduction | Enables use as both input and output switch in reconfigurable signal paths - e.g., shared analog bus architectures |
| Latchup-immune process | Epitaxial isolation prevents destructive latchup under overvoltage transients - meets IEC 61000-4-2 ESD immunity requirements |
| Single-supply capability | Operates from 12 V (V+ = 12 V, V− = 0 V) - supports legacy industrial systems without negative rails |
Applications
| Audio Switching | Data Acquisition |
|---|---|
Use Scenario: Routing line-level stereo signals between multiple codec inputs and headphone outputs in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST switch providing isolated channel selection with <−95 dB crosstalk to preserve stereo imaging fidelity. Use Value: 45 Ω RDS(on) minimizes insertion loss (<0.1 dB), while −1 pC charge injection prevents audible pop/click during real-time mute transitions. | Use Scenario: Multiplexing 16-channel thermocouple inputs into a single high-resolution ADC in environmental monitoring systems. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with <120 ns channel settling time and <±0.01 nA leakage. Use Value: ±15 V signal range accommodates amplified thermocouple outputs; matched RDS(on) (≤5 Ω) ensures uniform gain across all channels. |
| Sample-and-Hold Circuits | Medical Instrumentation |
Use Scenario: Capturing transient ECG waveforms in portable defibrillators using switched-capacitor hold topology. IC Role / Device Role / Timing Role: Low-charge-injection switch controlling capacitor charging phase with precise timing alignment to ADC conversion trigger. Use Value: −1 pC charge injection limits hold-step error to <5 µV on 2.2 nF hold capacitors - preserving diagnostic accuracy of ST-segment analysis. | Use Scenario: Isolating patient-connected EEG electrode inputs from high-speed digitization circuitry in neurodiagnostic systems. IC Role / Device Role / Timing Role: Safety-critical analog switch providing galvanic isolation between front-end amplifiers and ADC drivers. Use Value: Sub-nA leakage (±0.01 nA) prevents DC offset drift in ultra-high-gain (>100 dB) biopotential amplifiers; SOIC package supports IPC Class 3 assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618ESE+ | Higher on-resistance (100 Ω typ.), faster tON (75 ns), no dual-supply support - requires 3.3 V/5 V only | Optimized for low-voltage portable medical devices; unsuitable for ±15 V sensor interfaces | Select when single-supply operation and speed outweigh on-resistance requirements |
| ADG1412BRUZ | Lower on-resistance (1.8 Ω typ.), higher supply voltage (±20 V), larger TSSOP-16 package - 5 mm × 4.4 mm vs. SOIC's 9.9 mm × 3.8 mm | Better suited for high-precision test equipment requiring <1 Ω channel matching; incompatible with space-constrained PCB layouts | Select when ultra-low RDS(on) and wide supply range justify larger footprint and cost premium |
Compared with MAX4618ESE+ and ADG1412BRUZ, the DG442BDY-T1 delivers optimal balance of low on-resistance (45 Ω), robust ±15 V operation, and compact SOIC-16 packaging - making it ideal for industrial DAQ and medical systems where signal integrity, supply flexibility, and board area are co-constrained.
Availability
DG442BDY-T1 is available at Aetrix Electronics and suitable for data acquisition systems, medical instrumentation, automatic test equipment, and audio signal routing requiring stable component supply across extended temperature ranges.
Supply support for DG442BDY-T1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete power MOSFETs, analog switches, and precision resistors with emphasis on reliability and ruggedized process technologies.
The DG442BDY-T1 belongs to Vishay's high-voltage CMOS analog switch product line, engineered for industrial and medical applications demanding low distortion, high off-isolation, and latchup immunity in harsh electrical environments.
FAQ
What is the logic polarity of DG442BDY-T1 control inputs?
The DG442BDY-T1 uses active-low logic: an input voltage ≤ 0.8 V (logic '0') turns the corresponding switch ON, while ≥ 2.4 V (logic '1') turns it OFF. This inverted behavior distinguishes it from the DG441B and must be accounted for in firmware GPIO configuration. The DG442BDY-T1 truth table is explicitly defined in Vishay Document 72625, Rev. C, page 1.
Can DG442BDY-T1 operate from a single 12 V supply?
Yes, the DG442BDY-T1 supports single-supply operation with V+ = 12 V and V− = 0 V. In this configuration, the analog signal range is 0 V to 12 V, RDS(on) increases to 90 Ω typ., and tON remains 120 ns typ. These parameters are fully specified in the "Specifications (for single supply)" table on page 4 of the DG442BDY-T1 datasheet (Document 72625).
What is the maximum allowable analog signal voltage for DG442BDY-T1?
The DG442BDY-T1 supports analog signals from V− to V+, with absolute maximum ratings of (V−) − 2 V to (V+) + 2 V due to internal clamping diodes. For standard ±15 V dual-supply operation, the safe continuous analog range is ±15 V; exceeding this risks forward-biasing protection diodes and limiting current to 30 mA per terminal as specified in the Absolute Maximum Ratings table (page 2).
How does charge injection in DG442BDY-T1 affect sample-and-hold performance?
The DG442BDY-T1 specifies −1 pC typical charge injection, which directly determines pedestal error in sample-and-hold circuits. With a 1 nF hold capacitor, this yields <1 mV step error - verified in Figure 3 test circuit (page 7) and critical for maintaining DC accuracy in 12-bit+ data acquisition systems. The value is guaranteed by design per footnote 'e' on page 3.
Is DG442BDY-T1 pin-compatible with DG441BDY-T1-E3?
No, DG442BDY-T1 is not pin-compatible with DG441BDY-T1-E3. Although both use SOIC-16 packages and share identical pinouts (IN1–IN4, S1–S4, D1–D4, V+, V−, GND, NC), their logic functions are inverted: DG441B turns ON with logic '1', while DG442B turns ON with logic '0'. Interchanging them without firmware revision will reverse switch states - confirmed in the Truth Table on page 1 of Document 72625.
DG442BDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 80Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 220ns, 120ns
- -3db Bandwidth:
- -
- Charge Injection:
- -1pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG442BDY-T1 FAQ
1.How can I place an order for DG442BDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442BDY-T1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG442BDY-T1 reliable?
The price and inventory of DG442BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442BDY-T1 is usually 5 days.
3.What payment methods are accepted for DG442BDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442BDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442BDY-T1?
DG442BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442BDY-T1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG442BDY-T1?
For technical support, including DG442BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442BDY-T1 requirements.
6.How does Aetrix verify that DG442BDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG442BDY-T1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG442BDY-T1 meets industry standards.
7.What is the process for return or replacement of DG442BDY-T1?
All DG442BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG442BDY-T1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG442BDY-T1 part is unused and in its original packaging.
Return procedure for DG442BDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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